merge 2 array into new array after matching their content javascript -

i have 2 arrays, , want new array based upon condition content of these 2 arrays matched

arr1 = [{     package_id: 'aabbccdd',     level: 2   },   {     package_id: 'xycd21',     level: 3   } ]  arr2 = [{     package_id: 'aabbccdd',     level: 1   },   {     package_id: 'zcb21',     level: 5   }]  mergedarray = [{     package_id: 'aabbccdd',     arr1level: 2,     arr2level: 1   },   {     package_id: 'xycd21',     arr1level: 3,     arr2level: 0   },   {     package_id: 'zcb21',     arr1level: 0,     arr2level: 5   }] 

so if package_id checked in both arrays. , if found in either array, new array pushed 1 element level both array mentioned against package_id.

i not figure out logic that. if can done lodash kindly tell me.

you can solve using loops did here:

var arr1 = [{      package_id: 'aabbccdd',      level: 2    },    {      package_id: 'xycd21',      level: 3    }  ];    var arr2 = [{      package_id: 'aabbccdd',      level: 1    },    {      package_id: 'zcb21',      level: 5    }  ];      var mergedarr = [];  var tempobj = {};    for(var = 0; < arr1.length; i++){    tempobj.package_id = arr1[i].package_id;    tempobj.arr1level = arr1[i].level;    tempobj.arr2level = 0;    for(var k = 0; k < arr2.length; k++){      if(arr1[i].package_id === arr2[k].package_id){        tempobj.arr2level = arr2[k].level;      }    }    mergedarr.push(tempobj);    tempobj = {};  }    for(i = 0; < arr2.length; i++){    var isnew = true;    for(k = 0; k < mergedarr.length; k++){      if(arr2[i].package_id === mergedarr[k].package_id){        isnew = false;      }    }    if(isnew){      tempobj.package_id = arr2[i].package_id;      tempobj.arr2level = arr2[i].level;      tempobj.arr1level = 0;      mergedarr.push(tempobj);      tempobj = {};    }  }    console.log(mergedarr);